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Old 06-27-2010, 10:07 AM   #1
Uglyprimate OP
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Joined: Jul 2006
Location: Fort Whine Indiana
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Ninja 250, fixing after crash

Front end has a little bit "tweaked" feeling.

No visible damage anywhere, no cracks, no bends, just feels "off". Handles a little twisted with regards to front fork when riding in a straight line. Two piece handles, each mounting separately to the top of the tree.

Loosend triple tree clamps, slight improvement.

Loosend, removed front wheel, reinstalled, bigger improvement.

Felt so much better, I gently let go of the handles to see if bike would roll in a straight line. (20 mph, 2nd gear, residential street)

MASSIVE front end wobble INSTANTLY, rear brake only, bike regains composure once I slow down. Wobble stops when I grab the bars.

Granted, I'm 295 pounds on a 250 Ninja, but have ridden this bike plenty of times, including two up.

Everything tightened as far as I can tell.

Ideas to check next? What caused the front end to go apeshit?
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Old 06-27-2010, 10:42 AM   #2
GreaseMonkey
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Check wheel balance and tire/rim being out of round. Adjust steering head bearings too.


Were you able to let go of the bars before? Quite a few bikes get wobbly if you let go but many do not notice because they never let go of the bars while they are riding.
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Old 06-27-2010, 11:22 AM   #3
Truckin_Thumper
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first a lawn, now I gotta fix a WEEnja
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Old 06-27-2010, 11:31 AM   #4
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Quote:
Originally Posted by Truckin_Thumper
first a lawn, now I gotta fix a WEEnja
Nope, she needs it faster than that.

Kids job hunting and has plans to ride to Michigan in July.

FZ1 still down with parts availability, fucking Yamaha. I'm switching to fixin p the KLR. Tires, chain and sprockets I can handle. Now wishing I'd spent the extra $$$ on suspension.

I'm not mowing this weekend either. Too fucking hot. Even the neighbor won't get out his riding mower.
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Old 06-27-2010, 11:37 AM   #5
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Try and loosen the entire front end, including the bars.

Start at the wheel and go up.
Do not for get to adj. the stearhead bearings/nut.
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Old 06-27-2010, 03:15 PM   #6
seriousracer
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pm me your number i will come down if it is early enough and check it out.
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racing is not real till your fighting for the line into the next blind corner,real roads, real trees, real fast, real men rally.

be a man dodge tree bark!

We’ve said it before, but it bears repeating; the GS handles in ways a two-story building was never meant to.

Taking collections for Faye Butler Training please spare some change.

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Old 06-27-2010, 03:27 PM   #7
seriousracer
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ps i am in sturgis at the lake house so send me directions to coming down 9 to get to you.
kurt
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racing is not real till your fighting for the line into the next blind corner,real roads, real trees, real fast, real men rally.

be a man dodge tree bark!

We’ve said it before, but it bears repeating; the GS handles in ways a two-story building was never meant to.

Taking collections for Faye Butler Training please spare some change.

www.kmotorwerks.com

Remember red and yellow make orange.so to think orange is better means you have to use two steps to get there.
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Old 06-27-2010, 03:33 PM   #8
c_m_shooter
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loosen the top bolt in the center of the top triple clamp and the four pinch bolts. Hold the front tire in place somehow and twist the bars from side to side. Mine made a pop sound and was good as new once I tightened everything back up.
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Old 07-04-2010, 06:41 AM   #9
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Ok, updates to what was wrong.

Retraced my steps.

DOH, front wheel needed re-torqued. Wobble fixed.

Tried all the sugestions, work from bottom up, grab and twist, etc...

All gave improvements, but no fixes.

Made the trip to Niles Michigan Friday as I got off work early.

Pestered/Annoyed SeriousRacer with my kid's and my presense at his shop.

His short test ride ended with a "WTF....." Yup, he noticed the "tweak".

Couple hours later, it's all back together, works normal, the man has some serious skills.

Right front fork tube has a "slight" out of round. No kinks, no visible bends, but a micrometer measuring thingamabob (sometimes a tape measure is just overkill) showed a slight tweak.

Put fork tubes back into place where the differences were least.

Watched Kurt ride off for a while with a pocketfull of wrenches, while my 4 year old stole some of his pizza (and generally just relocated all his garage floor)

Bike came back good as new.

Happy Daughter (yes, she was dragged there as well), some great bonding time with the kids.

Happy Mom, knowing someone smarter than me worked on the bike, plus she doesn't have to tell me to sell my own bikes to buy the girl another one. Yes, I was told the next day if it couldn't have been fixed, one of mine was being traded to upgrade the girls.

Happy four year old, found out that garages full of motorcycles and race cars are COOL!!! Guess who dumped out my toolbox the next day?

One tired dad. (Me) Working since 1am, driving home from northern Wisconsin, getting the bike in the truck and making the two hour trip to Niles/South Bend, dealing with a four year old who never took a nap, NOR DID THE LITTLE SHITHEAD FALL ASLEEP ON THE RIDE HOME!!!

Then unloaded the bike at home (now 11pm) cause the girl babies this thing enough that it's not gonna sleep outside in the back of a truck. Ever unload a motorcycle in the dark with your wife and daughter wearing pajamas and your four year old riding his bike underneath/over your feet?

Kurt, we owe you big time. But you know you have our most sincere Thanks.
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Old 07-04-2010, 06:51 AM   #10
seriousracer
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Paid in full.

kurt
__________________
racing is not real till your fighting for the line into the next blind corner,real roads, real trees, real fast, real men rally.

be a man dodge tree bark!

We’ve said it before, but it bears repeating; the GS handles in ways a two-story building was never meant to.

Taking collections for Faye Butler Training please spare some change.

www.kmotorwerks.com

Remember red and yellow make orange.so to think orange is better means you have to use two steps to get there.
________
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